html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}

body {
    padding: 15px;
    background: url(../assets/images/bg1.jpeg) no-repeat center;
    background-size: cover;
}

.layui-form {
    width: 400px;
}

.layui-card {
    background-color: transparent;
}